JVC KS-AX4500 Service Manual page 13

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3 7 6 3 1 5 1 5 0
MAIN PCB [2/3] and SUB PCB circuit diagrams
7
+15V
C391
104P
C301
R302 C305
JA01-C U301-A
8
4.7/50V
21.5KF 100P NJM2068LD
SY-SW0406G 5
+
6
- 7
R301 R303
6
4
22KF 22KF
R306
C302
33KF
4.7/50V
C306
22P
R305 C304
C491
33KF 22P
R-IN
104P
-15V
5
JA03
C361
R361
LAD1140-04
4.7/50V
68KF
+ R363
C362 R362
15K
4.7/50V 68KF
-
C364
C363
102P
102P
HI-INPUT
C464 C463
-
102P 102P
C462 R462
R463
4.7/50V
+ 68KF
T E 15K
L 1 3 9 4 2 2 9 6 5 1 3
C461 R461
4 4.7/50V 68KF
L-IN
A
U301-B
C401
R402 NJM2068LD
JA01-D
4.7/50V
21.5KF
8
SY-SW0406G 3
1
R401
C402 R403
2
22KF
4.7/50V 22KF
C405
3 R406 33KF
100P
R404
C100 C403 C404
R405 C406
470
330/25V 103P 22P
33KF 22P
2
w w w
1
.
A B
KS-AX4500
+15V +15V
C392 C393
R321 R322
473P 473P
VR301-A
30K 30K
U302-A
20KB R313
C307 4558F
8 U303-A
R308 1K 8
4558F
4.7/50V 3
3
1K
1
2 1
R314
4 2
R312
1K
R323
30KF
C311 47P
R309 R310
1.3KF 15K
R311 C308
VR302-A
R315 R316
11KF 68P
20KB
1K 20K
R317
C316 C317
C492 C312
100K
473(M) 473(M)
473P 224(M)
R318
5.6K
-15V
C313
U303-B
183(M)
4558F
5
7
R319
6
4
470K
C493
473P
-15V
BASS BOOST(50Hz,0-12dB/oct) LPF-FLAT-HPF
(80Hz,12dB/oct)
C414
+15V
C408 36P
C395 R421 R422
R408
473P 30K 30K
R412 56KF
1K
R410
R413
8 U305-A
15KF
5
1K 4558F
VR301-B 3
20KB
C407 7
6 1
R414 2
4.7/50V U302-B
4
4558F
1K
R423
C411 47P
R409 R411
1.3KF 12K
VR302-B R415 R416
20KB 1K 20K
R417 C416 C417
C412
100K
473(M) 473(M)
224(M) R418
5.6K
C413
U305-B
183(M) 4558F
5
R419
7
6
470K
4
C495
473P
-15V
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i
C D
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8
R333
1K
C333
R334
22/16V
5.6K
+15V
C3198GR
C314 104(M)
C394
473P
8
3
R338
1
2
22
U304-A
C315 SW301-A R331 C331
C330
4558F
473(M) LPF
JSS2319 5.6KF 4.7/50V
4.7/50V
FLAT
HPF
30K R332
22KF
U304-B
R340
4558F
C332 22
5
68P
7
6
4
C494
R324
473P A1266GR
62K
R335
-15V
5.6K
C334
R336
22/16V
1K
Q300
J108
R330
10K
MUTE
Q Q R430
3 7 6 3
10K
Q400
R433 R437
J108
1K 1K
C433 R434
22/16V 5.6K
+15V
C3198GR
104(M)
C396
473P
8
3
R438
1
2
22
U306-A SW301-B C430
C431
C415
4558F
LPF JSS2319 4.7/50V
4.7/50V
473(M)
FLAT
HPF
R431
5.6KF
30K
U306-B
R440
4558F
C432 22
5
68P
7 R432
6
4
22KF
C496
R424
A1266GR
473P
62K
R435
-15V
5.6K
R442
1K
C434
R436
22/16V
1K
u 1 6 3
.
E F
2-4
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2 4
9 9 8
+15V
R337 R343
1K 47
Q305
Q301 A1268GR Q310
Q308
C335
Q302
D998
C1027Y
150P
C3198GR
Q312
R352
C3200GR
1.5K
R353
R339
15K
22
R344 R350
D301
C340
3.9K 0.1/3W
1N4148
150P
C336
R349
473(M)
220
Q307
R351
C3200GR
0.1/3W
R341 R345
2.7K
22
C337 Q309 Q311
Q303
Q304
150P A1023Y B778
A1266GR
Q306
C3200GR
R342 R346
1K 47
R347 12KF
R348
-15V
1KF
C338 56P
C339
100/16V
+15V
1 5 1 5 0 8 9 2 4
R443
47
Q405
Q401 A1268GR Q410
Q408
Q402 C435
D998
C1027Y
C3198GR 150P
Q412
R452
C3200GR
1.5K
R439
R453
22
15K
R444
R450
D401
3.9K C440
0.1/3W
1N4148
150P
C436
R449
473(M)
220
Q407
R451
C3200GR
0.1/3W
R441 R445
22 2.7K
Q403 Q409 Q411
C437
Q404
A1023Y B778
150P
A1266GR
Q406
C3200GR
R446
47
R447 12KF
R448
-15V
1KF
C438 56P
C439
100/16V
m
c o
Caution
If electricity is connected during disassembly, it must be a no load current. If it is load
current, be sure to attach a heat sink to the power-amp IC. This will be damaged if the
above precautions are not followed, as it does not have a sub heat sink attached to it.
G H I
2
9 9
PROTECTION
R356 R355
680/2W 4.7/0.5W
C341
104(M)
P03
TM0009-00
R354
56K
OFFSET
C342
R454
104P
56K
9 8 2 9 9
CHASSIS
R455
R456
4.7/0.5W
680/2W
C441
104(M)
Indicates main signal path
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